Abstract

Multiple-beam Fizeau fringes in transmission have been applied to the study of the nonlinear stress–strain relationship due to bending in the cladding of single-mode optical fibers. The present study yields a relation between the variation of refractive indices of bent single-mode fibers, represented by the fringe shift, and the nonlinear radial change of Young’s modulus along the fiber cross section. Experimentally, the study confirms the nonlinear asymmetric stress–strain relation across the fiber cross section. This relation is due to the asymmetric distribution of the compression and tensile stresses over the fiber cross section rather than to the shift in the centroid (neutral axis).

© 2001 Optical Society of America

Multiple-beam interferometric determination of Poisson’s ratio and strain distribution profiles along the cross section of bent single-mode optical fibers

Fouad El-Diasty
Appl. Opt. 39(19) 3197-3201 (2000)

Effect of the nonlinear stress-strain relationship on the maximum stress in silica fibers subjected to two-point bending

E. Suhir
Appl. Opt. 32(9) 1567-1572 (1993)

Theoretical and experimental evaluation of the modal field shift and the associated transition loss in perturbed index-profile single-mode optical fiber with application of Fizeau interferometry

Fouad El-Diasty
J. Opt. Soc. Am. A 21(8) 1496-1502 (2004)

Nonlinearity in bent optical fibers

Fouad El-Diasty and Hatem A. El-Hennawi
Appl. Opt. 48(19) 3818-3822 (2009)

Evaluation of some GRIN fiber parameters and the associated fraction mode loss due to mechanically induced optical anisotropy

Fouad El-Diasty
Appl. Opt. 42(26) 5263-5273 (2003)